We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Synthesis and Photovoltaic Properties of a D-A Copolymer Based on the 2,3-Di(5-hexylthiophen-2-yl)quinoxaline Acceptor Unit.
- Authors
Wang, Kun; Zhang, Zhi ‐ Guo; Fu, Qiang; Li, Yongfang
- Abstract
A new D-A copolymer ( PBDT-DTQx) based on the 2,3-di(5-hexylthiophen-2-yl)quinoxaline acceptor unit and a bithienyl-substituted benzodithiophene (BDT) donor unit is designed and synthesized for application as the donor material in polymer solar cells (PSCs). The polymer film shows a broad absorption band covering the wavelength range from 300 to 720 nm and a low highest occupied molecular orbital (HOMO) energy level at −5.35 eV. A device based on PBDT-DTQx:PC70BM ([6,6]-phenyl-C71-butyric acid methyl ester) (1:2.5, w/w) with chloronaphthalene as a solvent additive displays a power conversion efficiency (PCE) of 3.15%. With methanol treatment, the PCE of the PSCs is further improved to 3.90% with a significant increase of the short-circuit current density, Jsc, from 10.10 mA cm−2 for the device without the methanol treatment to 11.71 mA cm−2 for the device with the methanol treatment.
- Subjects
COPOLYMERS; SOLAR cells; PLASTIC films; MOLECULAR orbitals; ENERGY levels (Quantum mechanics)
- Publication
Macromolecular Chemistry & Physics, 2014, Vol 215, Issue 7, p597
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201300793